Ruby Labs

You'll **implement LLM-powered features** in a production AI product using Node.js, Next.js, and TypeScript. You'll contribute to **prompt systems and structured outputs** while learning observability and evaluation. This is a hands-on role where you'll **ship real AI features** under senior guidance.

You'll own **experiment validation** from preview to production, working closely with the **Growth team** to ensure correct implementation and tracking. Your work directly impacts **product quality and data integrity**, enabling reliable product decisions.

You'll **implement AI-powered features** in a **production-ready LLM stack** using Node.js, Next.js, and TypeScript. You'll contribute to prompt engineering, structured outputs, and evaluation pipelines while **learning from senior engineers** in a fast-moving AI product environment.

You'll take full ownership of **campaign execution** and **budget management** for consumer products. You'll directly optimize Meta Ads and Google Ads to drive high-ROI growth. This hands-on role offers a clear path to **Lead or Head of User Acquisition** as the team scales.

You'll own the data platform powering **Paynext payments and billing analytics**, designing event-driven pipelines and optimizing datasets for financial metrics. Your work will ensure reliable, low-latency data for product, finance, risk, and operations teams. This role offers the chance to work with **ClickHouse** and a **remote-first environment** within CET time zones.

You'll **own core product components** from concept to deployment, **shape architecture**, and **mentor engineers** in a high-growth D2C platform. Your work directly impacts a product used by hundreds of thousands of customers globally.

You'll lead **conversion rate optimization** for our reverse lookup products, driving experiment cycles from research to rollout. You'll collaborate with engineers to implement tests and analyze results, using **AI tools** to accelerate insights. This role offers hands-on ownership of growth experiments in a fast-paced consumer tech environment.

You'll join the Billing and Data team to **analyze financial performance** and **drive better decision-making** across products. Your core impact will be reducing financial risks and improving billing efficiency through **data-driven insights**.

You'll create **2D banner ads** and **motion graphics** for performance marketing campaigns across Meta, TikTok, and YouTube. Your work will directly impact user acquisition by producing engaging ad creatives. You'll stay ahead of trends and use **AI tools** to generate images, contributing to a fast-paced, innovative team.

You'll lead end-to-end conversion optimization cycles to deliver **15% conversion rate growth per quarter** for innovative consumer products. You'll own the entire process from data analysis to implementation, collaborating with engineers to deploy tests. This role offers **direct compensation tied to performance** for those who exceed targets.

You'll lead **high-performing ad creative production** for a **remote-first tech company** in iGaming. Your scroll-stopping concepts directly impact CPA and revenue through **rapid A/B testing cycles**. Collaborate daily with UA Managers to optimize creatives in a compliance-sensitive environment.

You'll drive top-of-funnel growth by running daily product experiments to optimize web funnels for a B2C consumer product. As part of Ruby Labs, you'll own the experimentation lifecycle from hypothesis to release. This fully remote role offers **unlimited PTO** and the opportunity to work with **Cutting-edge analytics tools**.

You'll own the data strategy behind **subscription billing operations** and build analyses that improve billing performance. You'll lead and mentor a team of analysts while partnering cross-functionally with Billing, Support, Finance, Product, and Marketing. This role offers **remote work** and a chance to drive high-impact decisions.

You'll manage the document content for a high-growth D2C automation product, working at the intersection of CMS, PDF preparation, and structured content. You'll **take ownership of building fillable PDF forms** and **modular agreement content** using Adobe Acrobat and Payload CMS. This role offers the chance to shape a product used by hundreds of thousands globally.

You'll shape AI infrastructure and drive production-ready LLM experiences at Ruby Labs, owning advanced prompt systems and complex workflows. You'll make data-driven decisions on model performance, reliability, and cost using Langfuse and OpenRouter. This role offers **full ownership of key AI features** from experimentation to live production within a **remote-first, fast-growing tech company**.

You'll lead **web funnel optimization** for a **consumer subscription product** in a fast-growing portfolio. You'll own the growth process from hypothesis to execution, driving **conversion rate and LTV improvements** through A/B testing.

You'll **design and scale backend systems** for a **high-ownership AI product** at a leading consumer tech company. Your work will directly impact **feature delivery and infrastructure excellence** across distributed systems.

You'll lead a team of 3-6 UA Managers, overseeing **$1M+ monthly ad budgets** across multiple networks. You'll drive **high-ROI scaling strategies** and ensure operational excellence. This hands-on role demands deep expertise in **Facebook Ads and Google Ads** to optimize performance daily.

You'll own and scale the **connector ecosystem** that powers AI features, working in an AI engineering squad. Your core impact is growing the number, quality, and reliability of **third-party integrations**. You'll use **AI tools daily** for prototyping and analysis.

You'll own the full optimization loop for a **category-defining document management platform**, working across acquisition, activation, retention, and monetization. You'll use **AI tools daily** to accelerate research, design, and analysis. Expect fast iteration, shipping tests in days, and **compensation tied directly to impact**.

You'll own and drive **AI systems quality** in production using a modern stack of **Next.js, TypeScript, and Node.js**. You'll design **agentic AI workflows** with tool-using systems and orchestrate multiple LLM providers. You'll also build **data-driven experimentation pipelines** with Langfuse and Mixpanel across collaborative squads.

You'll **validate payment flows** and **API integrations** for a fast-moving payments platform in a Kanban environment. Your work will ensure stability during frequent releases and urgent hotfixes, balancing speed with safety on critical financial routes.

You'll launch new funnels from zero to one for a core D2C subscription product. You'll own the full lifecycle including research, design, build, and post-launch growth experimentation. This role demands hands-on funnel ownership and **data-driven decision making** with **AI tooling** as a core part of your workflow.

You'll own and scale **Bing (Microsoft Advertising)** as a performance channel for a **D2C subscription product**, driving consistent, high-ROI growth. You'll take full ownership of strategy, budget, and campaign structures to **unlock untapped volume**. This hands-on role rewards performance directly and offers rapid scope expansion.

You'll own and scale **Facebook as a performance channel** for our D2C subscription products, driving **high-ROI growth across multiple geos**. You'll act as a **channel business owner**, making independent data-driven decisions and presenting weekly strategies.

You'll own and scale our **Meta paid social program** from a strong foundation, driving **performance marketing** accountable to CPA and ROAS targets. You'll shape **creative strategy daily** and build a repeatable testing system to grow the channel profitably.

You'll **own TikTok as a performance channel** for a D2C subscription product, scaling it to a **7-figure budget** and driving high-ROI growth across multiple geos. You'll run the channel like a business, making data-driven decisions and presenting weekly strategies.

You'll own and launch Brazil from zero for a D2C subscription product, scaling spend to a **seven-figure monthly budget** while driving **efficient CAC and ROAS**. You'll define country strategy, run campaigns across global and local ad networks, and leverage **deep Brazilian audience knowledge** to deliver predictable growth. This is a high-autonomy role with direct performance rewards.

You'll **own paid acquisition** for a core D2C subscription product, maximizing ROI across channels. You'll drive **high-quality traffic** that converts and retains, collaborating closely with creative and analytics teams. Performance is directly and significantly rewarded.

You'll **own and scale AWS Aurora PostgreSQL** for a high-volume payment orchestration system processing millions of transactions monthly. Your core impact is ensuring data correctness, performance, and reliability as the platform grows. You'll work with **large datasets, complex queries, and analytics pipelines** in a fully remote, high-talent engineering team.

You'll lead **ad creative development** for multiple consumer brands, driving **customer acquisition through innovative concepts**. You'll analyze performance data and collaborate with user acquisition teams to **optimize campaign effectiveness**.

You'll join a **SaaS QR code generator project**, performing manual QA for new features, bug fixes, and A/B experiments. Your core impact is ensuring **payment flows and analytics events** work flawlessly before each release. This role emphasizes **edge-case testing and clear bug reporting** in a fast-paced environment.

You'll own complex areas of a **scalable D2C product** used by hundreds of thousands of users, driving technical decisions with minimal supervision. You'll ship in days, not weeks, balancing speed with quality under real-world pressure. This role offers a **remote-first environment** with **unlimited PTO**.

You'll own UX strategy and design quality as a core growth lever for a high-growth D2C product used by hundreds of thousands of customers globally. You'll turn UX into a measurable driver of activation, retention, and conversion by analyzing product data, running experiments, and leading research. This role offers high ownership and the chance to build the design foundation from the ground up.

You'll drive **ARPU optimization** for subscription products, targeting a **15% quarterly ARPU increase**. You'll own the full cycle from hypothesis to production, leveraging **AI tools** like Claude for prototyping and analysis.

You'll own **UX strategy** and **design quality** for a high-growth D2C product, turning UX into a measurable growth lever by improving activation, retention, and conversion. You'll work closely with Product and Growth teams to optimize funnels and user journeys.

You'll lead **ad creative development** for multiple consumer brands at Ruby Labs. Your core impact is driving **high-performing ad concepts** that align with campaign goals and performance data. You'll bridge creative and user acquisition teams, fostering innovation through **A/B testing and data-driven optimization**.

You'll define and execute the experimentation roadmap to **grow email as a conversion channel** across all Ruby Labs brands. You'll design A/B tests, analyze results with statistical rigor, and roll out winners at scale. This role is **entirely focused on conversion growth** — not day-to-day campaign execution.

You'll **own the coordination layer** across multiple teams at a fast-moving consumer product company. Your core impact is ensuring delivery runs smoothly and communication is clear. This role stands out for its focus on **building systems** and **continuous improvement**.

You'll drive **subscriptions through web funnels** by managing paid social campaigns, primarily on **Meta**. You'll run creative tests and optimize campaigns to hit CPA and ROAS targets, working with a **collaborative cross-functional team**.

You'll lead **end-to-end CRO cycles** for innovative consumer products, owning everything from data analysis to implementation. Your core impact: deliver **15% conversion rate growth** in a quarter. The role stands out for its **performance-based compensation** that directly rewards exceeding targets.

You'll own **AI systems in production** and drive the **quality and reliability of major AI features**. You'll build **agentic, tool-using AI workflows** using a modern stack (Next.js, TypeScript, Node.js, Redis). This high-ownership role lets you make a direct impact on consumer products across health, education, and entertainment.

You'll shape product experiences by conducting **user research** and designing **intuitive wireframes**. You'll analyze user behavior and collaborate with product teams to drive **data-informed decisions**.

You'll own and drive the quality, reliability, and evolution of **AI systems in production** at Ruby Labs. You'll deliver **major AI features end-to-end** using a modern stack (Next.js, TypeScript, Node.js, Redis) and build **agentic, tool-using AI workflows** with clean tool contracts. This high-ownership role offers the chance to shape consumer products in health, education, and entertainment while working remotely within CET timezone.

You'll execute and optimize **Meta advertising campaigns** to drive user growth across multiple funnels. Your work directly impacts the efficiency and ROI of large ad budgets. This remote role offers **unlimited PTO** and a **company-provided MacBook**.

You'll join Ruby Labs to advance our AI infrastructure, focusing on **model performance** and **cost efficiency**. You'll own prompt systems and LLM workflows, driving key AI features from experimentation to production.

You'll own **complex product areas end-to-end** for a battle-tested D2C product used by hundreds of thousands of customers globally. You'll drive **technical decisions** independently and ship features in days, not weeks.

You'll drive **ARPU optimization** for subscription products at Ruby Labs, aiming for a 15% quarterly increase through retention and engagement improvements. You'll own the full cycle from hypothesis to production, using **AI tools like Claude** for prototyping and analysis. This role offers a **remote-first culture** with unlimited PTO.

You'll build **scalable backend services** and develop a **billing system** using Golang. You'll work in a cross-functional team focused on delivering results sustainably.

You'll own the **end-to-end optimization loop** for Ruby Labs' consumer products, driving **conversion rate improvements** through data analysis, hypothesis generation, and rapid experimentation. This role offers **direct financial upside** tied to performance results.

You'll support daily mobile product operations for a fast-growing AI-focused portfolio company, focusing on Android app experience and feature scoping. Your core impact is helping keep the product running smoothly through strong execution and **cross-functional collaboration**. This role stands out with **hands-on UX research** and **app build QA** responsibilities.

You'll design and build **MCP-based services** and **AI-powered backend systems** using TypeScript and Node.js. Your work will enhance internal automation and developer tooling, making AI systems reliable and scalable. You'll collaborate with cross-functional teams to integrate cutting-edge AI into production workflows.

You'll lead the centralized User Acquisition department at Ruby Labs, servicing multiple subscription products across health, education, and entertainment. You'll define the overall UA strategy across platforms like Meta, TikTok, and Google, driving **scalable efficiencies** and **unified cross-group growth**. This high-impact leadership role offers the chance to build a high-performance team and shape the future of UA-as-a-Service.

You'll own **billing analytics** for a leading consumer products company, building data pipelines and dashboards in **ClickHouse** and **Tinybird**. Your work will directly impact revenue metrics and cross-team decisions. This role offers the autonomy to shape analytics infrastructure from the ground up.

You'll lead **conversion optimization** for consumer products, driving a 15% quarterly growth target. You'll own the full cycle from data analysis to design to implementation, with **direct impact on performance**. This role offers compensation tied to measurable results, rewarding top performers.

You'll partner with product owners and data teams to **create new dashboards** and improve existing reports, ensuring accurate data for decision-making. You'll analyze user behavior and **drive actionable insights** to maximize KPIs. This role offers the chance to **design robust data models** in a fast-paced, remote environment.

You'll partner with product owners and data leaders to **own data pipelines and analytics** for a fast-scaling job application platform. Your insights will **guide product decisions and shape user experiences**. This role offers **direct impact on a trending product** redefining professional role changes.

You'll take full ownership of user acquisition campaigns, managing budgets and driving performance across Meta and Google Ads. You'll work directly in ad accounts daily, launching and optimizing campaigns autonomously. This role offers a **clear path to Head of UA** as the team scales, with **high impact and high responsibility**.

You'll take an active role in developing complex features using **Next.js** and **NodeJS** for a leading tech company. You'll implement Agile methodologies and enforce best practices in coding, testing, and security. This role offers the **freedom of remote work** with a vibrant team.

You'll own and optimize Google Ads campaigns for a fast-growing astrology app, managing **6-figure monthly budgets**. Your core impact is scaling user acquisition across multiple regions while maintaining strong ROI. This role offers full autonomy and big budgets in a high-performance environment.

You'll drive **subscriptions through web funnels** by managing and optimizing **paid social ad accounts** on Meta and other platforms. You'll own 7-figure budgets, make data-driven decisions, and prepare weekly strategies in a fast-paced environment.

You'll own the document content for a high-growth D2C document automation product, preparing fillable PDF forms and building modular content blocks in **Payload CMS**. You'll work cross-functionally to keep the library accurate and growing. This role is ideal for someone who thrives at the intersection of **CMS operations** and **document automation**.

You'll join Ruby Labs as a **Senior Data Analyst** on a new **job application platform**, collecting and analyzing data to drive product decisions. Your insights will guide the roadmap and shape user experiences, tackling complex challenges like decoding user intent and optimizing conversion funnels.

You'll build and scale a profitable D2C product used by hundreds of thousands of customers globally. You'll take ownership of features across the stack, **ship fast and independently**, and grow into senior responsibilities in a high-pace environment.

You'll lead a centralized User Acquisition department delivering **UA-as-a-Service** to multiple subscription products. You'll drive strategy across all paid channels, manage multi-million dollar budgets, and mentor a distributed team. This high-impact role offers the chance to shape growth at scale in a fast-paced environment.